<?php
echo 12345,"\n";
echo 012350,"\n"; //以0或0o开头，后跟0~7数字，这是8进制数据
echo 0o12_350,"\n"; //以0或0o开头，后跟0~7数字，这是8进制数据
echo 0x2F,"\n";//以0x开头，后跟0~9A-F数字，这是16进制数据
echo 0b101_1,"\n"; //以0b开头，后跟0~1数字，这是2进制数据
echo 0b1010_10_1_1,"\n";